Every engine has some sort of crankcase breathing system. The internal combustion process creates pressure, some of which makes its way past the piston rings-along with fuel vapors-and into the ...

A significant part of these on-road emissions used to come from the crankcase — up to 30%, according to a 1962 study — but thanks to changes in engine design, that's no longer true.

A properly functioning PCV system will expel the gases from the crankcase faster than the engine produces them. ... Tuning Issues, and Proper Crankcase Ventilation. HOT ROD Staff Writer May 25, 2018.

The crew was able to secure ventilation to the engine room, and the fire self-extinguished. None of the 128 passengers on board were hurt and no pollution was reported.

Following last month's CFM Plus intake manifold install on the 7.3L Power Stroke, we decided to bring you another easy bolt-on option for your '991/2 to '03 Super Duty-BD Diesel's crank case vent ...

Spiracle CFS systems reduce blow-by emissions generated from an open crankcase vent and prevent fouling of turbochargers or intercoolers in CCV systems. Also reduce in-cab fumes and draft tube ...

The positive crankcase ventilation valve releases exhaust gas and unburned fuel from the engine block into the intake manifold. All engines allow some exhaust gases, unburned fuel and oil to ...

Although some maintenance schedules include an interval for replacing the positive crankcase ventilation, or PCV, valve, others may not. In the latter case, a general recommendation is to replace ...

The job of the Positive Crankcase Ventilation (PCV) system is to remove blow-by gases from the crankcase by vacuum and recirculate them via the intake manifold to be burned in the engine.